[richfaces-issues] NoClassDefFoundError

Hello, I'm getting this strange error after having deployed a new version of my appplication : Caused by: java.lang.NoClassDefFoundError: Could not initialize class org.richfaces.renderkit.html.images.SliderArrowImage I get this error only on a particular machine (it works fine on some others). Here is my configuration : - Fedora Core 8 - Apache Tomcat 6.0.16 - Java 6 - Use maven 2.0.9 to manage dependencies / deploy the app - Use Richfaces-3.2.0.GA I've checked that after deploying all this jars were present on the machine (so the class SliderArrowImage is here). Any idea ? Thanks, Marc.